Hii!! I'm struggling a little on this, could someone help me with both the questions? thanks!! (how do i give brainliest help il
l give brainliest to the best answer)
1 answer:
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Multiply both the numerator and denominator by , which is called the "conjugate" of
:
Why do we pick this number? Recall the difference of squares factorization:
Now replace and
. Then
So in your fraction, you end up with
Finally, just expand the product.